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Smart SMD Soldering

Blu-tack packet

Blu-tack is a registered trademark of Bostik
Blu-tack is an multi-purpose adhesive commonly sold in office supply stores. It can be used in the following manner as a aid for the hand soldering of SMD components. This simple method allows for the perfect alignment of SMD chips, first time, every time.

(1)

Roughly position the chip on the board. An SO28 chip is shown in this example, but this technique can be used with any package.

(2)

Secure the chip to the board with two pieces of blu-tack placed against the top and bottom of the chip. The chip's position can then be adjusted until perfect alignment between pins and pads has been achieved.

(3)

Solder the four corner pins of the chip to the board first. The remaining pins of the chip can then be soldered to the pads of the board.

(4)

Finally remove the blu-tack. There are no "residues" or other marks left on the board. The blu-tack leaves nothing behind except a perfectly aligned chip.

(1)

Roughly position the chip on the board

(2)

Secure the chip to the board with two pieces of blu-tack placed against the top and bottom of the chip

(3)

Solder the four corner pins of the chip to the board first

(4)

Remove the blu-tack leaving nothing behind except a perfectly aligned chip

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